Engine Is F^%$%d

[GD2ILA]

Hi Guys/Gals,

i have a BNR34 RB26DETT, just recently my work machanic serviced my car and he put in NGK Platinum spark plugs after that the car started to misfire bad . i put NGK Iridium plugs back in and the misfire is a little better but it's still there. now it's getting worse and worse the car is splattering and when i accelertate car just splaters and doesn't go anywhere. would a retune fix this or is it deeper than that. any help and suggestion would be greatly appriciated.

[Downforce]

NGK coppers work fine for me. just re-gap them.

you could have an issue with your airflow meters.

[R31Nismoid]

Plati/Iridi = waste of money and time

They foul too easily.

Better off with coppers for less than $20 a set.

I bet your gaps are probably wrong, or coil packs have seen better days, either way - back to your mechanic

[B-rad33]

Dont you love it when you car misfires all the time..

i dont lol

[GD2ILA]

the dame thing was perfect until the platnium plugs was put in. i don't understand how it can screw up so badly. make me wanna cry with my baby like this.

[SXR]

probably the coil pack plugs isn't fully clicked on also the gapping

[jenkies]

hey mate had the EXACT same thing happen recently (rb26dett). took my plugs out(irridium) gapped them from 1.1 to o.7 fixed the problem completely

good luck.

[turbo rxp]

great mechainic to recomend and use platnuin

[GD2ILA]

great mechainic to recomend and use platnuin

yeah i didn't know he put platniums in until i started driving home and felt somthing wrong with the car. one things for sure he's never touching my car again .

[evade]

thought you arent supposed to regap platinum/iridiums? oh well doesnt mean you cant try i guess..

check coil packs..see if you can swap with someone else to test..

[ylwgtr2]

is it misfiring constantly or just when boosting up?

[dmac_25]

Coppers for the win at around .8mm gap

Check all the plugs are clicked in

Check that the contacters in the bottom of the coil packs are still there i had a set floating around the floor of my car put them in and was missing found the contacter on the floor put in back in and is good you will have to remove the rubber boot to find them also while your there give them a clean with some fine emeroy paper

If that all fails swap over coils and air flow meters only do one at a time to find out which is f**ked

[Adz]

Bit early for R34 coil packs to be failing.

Does it have an aftermarket ecu. If so id say it needs a retune and some fresh copper plugs.

Two words Race Pace

[GD2ILA]

Bit early for R34 coil packs to be failing.

Does it have an aftermarket ecu. If so id say it needs a retune and some fresh copper plugs.

Two words Race Pace

Racepace is were i got my stage1 done and were i normally get my car serviced. the 1 time i didn't take it there this happens. anywayz tried to book but Ben said he's busy for 2 weeks.

[ylwgtr2]

so is it constantly or just under boost?

[GD2ILA]

so is it constantly or just under boost?

constant. when engine is cold it's misfire is really really bad but once it's working temp it's kind of ok (but still there). must be foul on plugs until high temp burns most of it away hence ok when warm. what do u guys/gals think?

[paulr33]

yeah loose plug then, check the coilpack loom and all plugs, even unplug and replug them all

if the coils were old and tired it would misfire on boost but be ok for normal load

if the gap was wrong it would be fine for normal load only on boost it would misfire

[ylwgtr2]

ok...thats the answer i been waiting for.....what i reckon is wrong is that the connector prong to the coil on misfiring cylinder isnt fitted into the connector properly ive done it myself....what you do is let the car idle and disconnect each coil connector until you find the one that doesnt make a diffrence and theres your culprit

[GD2ILA]

thanks for ur help everyone. i'll unplug and replug every single one + check coilpack loom. will update with results tomorrow.

[Shadz]

I just got my car back from the mechanic with the same problem. What the problem was, the coil pack wire was shorting out and caused the car to misfire like hell. He replaced the sparks (copper ones gapped to .8) due to them fouling up and changed the coil pack wire. Car is 100% better.